Elastomeric Impressions

Question 1

when are impressions usually taken?

Answer 1

USUALALY AFTER

• implant osseointegration
• soft tissue healing
• development of the emergence profile, so it can be recorded when designing the final restoration

Question 2

types of elastomeric impression

Answer 2

open or closed tray technique

Question 3

general fact about a tri-channel

Answer 3

only goes in one of three ways

Question 4

what are some things to consider that could be different between type and manufacturer of implant

Answer 4

1. tissue level or bone level
2. connection type (internal hex, tri-channel, external hex)
3. size/ diameter of the implant

Question 5

things you need to know prior to taking patients impression

Answer 5

1. type of implant and the manufacturer
   - 1. tissue level or bone level
2. connection type (internal hex, tri-channel, external hex)
3. size/ diameter of the implant

AND

2. position of implant
   - path of insertion
   - number of implants

Question 6

elastomeric impression technique you should use with multiple implants?

Answer 6

OPEN

Question 7

elastomeric impression technique you should use with single implant restorations?

Answer 7

CLOSED

Question 8

in a closed tray impression where is the transfer coping?

Answer 8

it STAYS IN PATIENTS MOUTH

• so stays in while take impression
• then when finished transfer it back to the impression

Question 9

describe open tray technique

Answer 9

1. make a hole in the tray
2. screw impression copings on implant – finger pressure no torquing (radiograph can be taken at this stage)
3. fill impression tray with material and around implant site
4. let it set
5. UNSCREW IMPRESSION COPING
6. impression is removed from mouth an the lab analog is attached to the impression coping

Question 10

where is the impression coping AFTER impression sets in an open and closed tray technique?

Answer 10

open tray –> STAYS IN IMPRESSION

closed tray –> STAYS IN IMPLANT (stays in patients mouth)

Question 11

steps in a closed tray technique

Answer 11

1. screw impression coping into implant
2. FILL TREY - there is NO HOLE IN THE TRAY
3. put material around implant and place in the mouth
4. seated – then use screw driver to fasten the impression coping (finger pressure) no torquing and a radiograph may be used to make sure it is seated all the way
5. remove after sets
6. unscrew the implant and connect is OUTSIDE THE MOUTH
7. analog / coping assembly is then seated in the impression